Storage-battery plate.



,mmorlrnn naannoum, oFYNnW Yoan, N. Y.

STORAGE-BATTERY PLATE.

specification of Letters Patent. l Patented July 28, 1914.

Application led July 19, 1913. Serial No. 780,005.

l' all 'whom 'it may c01icc1''z.:

He it known'that I, RUDoLrHn DRAM- tgouno, a citizen of the United States, and resident ofthe borough of Brooklyn, in the cityland State of New York, have invented 5 newand luseful Improvement in StorageatteryPlates, of which the following is a Specification.

Tilisejnvention relates to storage battery of the general nature referred to in ,mf e ending application Serial No. 774,656, vliid .lime 19, v1913, with the object in View of increasing the eliciency thereof.

IAnother object is to provide certain improvements inthe form, construction and arrangement, of the several parts whereby the above-mentioned object may be effectively'carried' out and the unit and its va-l rious parts may be conveniently handled in asisenbling `them and'disassembling them iuj a ce l.

A practical embodiment of my inven'tln is represented in the accompanyimt drawings, in'Which-- Figure l .represents a section through a l1, with one of the units in t.uosition theren, .portions being broken. away to show underlying parts, 'Fig 2 represents a section taken in the plane of the line A--A of Fig. 1, looking in the direction of the arrows, and Fig. 3 represents a top plan view of the parts shown in Fig. 2.-

A suitable cell is denoted by 1 and it may be composed of glass or other desirable material and may be of conventional shape.

The unitcomprises a casing 2 composed of some suitable lead-like material, and I prefer that it vshall consist of a composition comprising antimony, iron pyrite (fools old) with the mica removed from it, and ead; these ingredients being preferably compounded in the proportions of five per cent. 'of antimony, ten per cent. o f'ron pyrite withv the mica removed and eightyve per cent. of lead. And when I say iron pyrite in theyclaims, I mean iron pyrite with the mica removed.

Tlie"casing 2 may be oblong in horizontal section or of any other convenient form or shape, and I preferably make it openl at the top and provide` its ends with brackets 3 adapted to rest upon the upper edges of the @ell 1, for supporting the unit within the paid cell separated from the bottom thereof, as clearly shown in Fig. l. It will be understood that the casing 2 is liquid tight in order to hold the electrolyte as indicated in the drawings.

The .side walls of the casino4 2 are laterally projected, both inwarddy and outwardly, in the form of a grid 4, this gridlike structure being composed of the same.

not flush with them and arel not in contact with the side walls of the' casing. The interstices of these grids are provided with a filling 5 to make them of a slab-like nature,A this filling being composed of oxid of red lead, litharge, powdered charcoal, bone- Aash, graphite, pulverized sulfur and oxid of magnesium, mixed with sulfuric acid and glycerin and compressed into the rid in paste like form; after which it hart ens, leaving the face of the grid substantially flush. The addition of these grids tothe inner and outer side walls of the casing 2, greatly increases the amperage of the plate` 'much more so than would the addition of slabsI composed of the same material as the remainder oi" the casing.

Within the casing 2, I place three grids, of substantially the same form and of the samel composition as the grids already described whicb are secured to the inner and outer side walls of the casing. one of these grids 6 is provided with a pair of bracket arms 7, very similar to the bracket arms 3 heretofore referred to, which bracket arms 7 are adapted to engage the upper edges of the casing 2 and hence support the grid 6 therein at a distance from the bottom of said casing. These bracket arms 7 are covered with insulating material 8, such as rubber, in orderto keep the grid 6 out of electrical contact with the casing 2.

Grids 9 and 10, of the same size and substantially the same composition as the, grid G, are located, one on cach side ol. the latter. and are similarly suspended within 'the easing 2 by bracket arms 11, 12, which are also covered with insulating material 13, 14, similar to the insulating material 8 on the bracket arms 7. These grids 9 and 10 are connected by a bridge which may be composed of any suitable material but pr 'c1'- ably of the same material as the grids. The

y The center,

comprising a grid composod of untimony, presence of two witnesses, this 'eighteenth iu'on pyrlte, und lend'; and o llmg comduy of July 1913.

posed of oxd of red lead lit-halve chul'coal j j bone-ash, graphite, sulfuzr, oXcIj of malghe: hUDOLPHE DhAMBOURG 5 slum, sulfuric acid and glycerin. Witnesses:

In testimony, that I claim the foregoing as EO. BENT,

' mynventon, I have signed my name in F. GEORGE BARRY. 

